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Finding the Fourth Proportional to 543,324.80, 814,987.20 and 343,870.40

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Solution

The fourth proportional to 543,324.80, 814,987.20 and 343,870.40 is: 515,805.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,324.80 : 814,987.20 = 343,870.40 : x
  2. Step 2: Convert to fraction form
    543,324.80/814,987.20 = 343,870.40/x
  3. Step 3: Cross multiply
    543,324.80x = 814,987.20 × 343,870.40
  4. Step 4: Simplify right side
    543,324.80x = 280,249,974,458.88
  5. Step 5: Solve for x
    x = 280,249,974,458.88/543,324.80
  6. Step 6: Final answer
    x = 515,805.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.